Same problem here. Nuvi 3490 with CityXplorer 2012.40 and CN2013.10 NTU. If i remove the CN 2013.10 NTU the CX shows in the list and work. With CN2013.10 instaled, CX is not visible in the map list and it allow only walk or drive (no public transport). The strange think is that when i try to switch to pedestrian mode - it's written Powered by CityXplorer.